Expansion of e.g.f.: cosh(x)*cos(tan(x)).

A009176

Expansion of e.g.f.: cosh(x)*cos(tan(x)).

Terms

    a(0) =1a(1) =0a(2) =-12a(3) =-216a(4) =-5296a(5) =-168128a(6) =-5391680a(7) =38412672a(8) =61881368832

External references